<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
    <title>Document</title>
</head>
<body>
    <div id="app"></div>
    <template id="root">
      <button @click="login">原始登录</button>
      <button v-debounce="login">防抖登陆</button>


    </template>
    <script>
        //创建应用实例
        const app=Vue.createApp({
            template:"#root",
            methods:{
                login(){
                    console.log("原始登录")
                }
            },
            directives:{
                debounce:{
                    mounted(el,binding){
                        let timer=null
                        el.addEventListener('click',()=>{
                            if (timer){
                                clearTimeout(timer)
                            }
                            timer=setTimeout(()=>{
                                binding.value()
                            },1000)
                        })
                    }
                }
            }
          
        })
      const root=  app.mount("#app")
    </script>
</body>
</html>